forked from openwrt/mt76
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy patheeprom.c
354 lines (293 loc) · 8.76 KB
/
eeprom.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2014 Felix Fietkau <[email protected]>
* Copyright (C) 2015 Jakub Kicinski <[email protected]>
* Copyright (C) 2018 Stanislaw Gruszka <[email protected]>
*/
#include <linux/module.h>
#include <linux/of.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/etherdevice.h>
#include <asm/unaligned.h>
#include "mt76x0.h"
#include "eeprom.h"
#include "../mt76x02_phy.h"
#define MT_MAP_READS DIV_ROUND_UP(MT_EFUSE_USAGE_MAP_SIZE, 16)
static int
mt76x0_efuse_physical_size_check(struct mt76x02_dev *dev)
{
u8 data[MT_MAP_READS * 16];
int ret, i;
u32 start = 0, end = 0, cnt_free;
ret = mt76x02_get_efuse_data(dev, MT_EE_USAGE_MAP_START, data,
sizeof(data), MT_EE_PHYSICAL_READ);
if (ret)
return ret;
for (i = 0; i < MT_EFUSE_USAGE_MAP_SIZE; i++)
if (!data[i]) {
if (!start)
start = MT_EE_USAGE_MAP_START + i;
end = MT_EE_USAGE_MAP_START + i;
}
cnt_free = end - start + 1;
if (MT_EFUSE_USAGE_MAP_SIZE - cnt_free < 5) {
dev_err(dev->mt76.dev,
"driver does not support default EEPROM\n");
return -EINVAL;
}
return 0;
}
static void mt76x0_set_chip_cap(struct mt76x02_dev *dev)
{
u16 nic_conf0 = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0);
u16 nic_conf1 = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_1);
mt76x02_eeprom_parse_hw_cap(dev);
dev_dbg(dev->mt76.dev, "2GHz %d 5GHz %d\n",
dev->mt76.cap.has_2ghz, dev->mt76.cap.has_5ghz);
if (dev->no_2ghz) {
dev->mt76.cap.has_2ghz = false;
dev_dbg(dev->mt76.dev, "mask out 2GHz support\n");
}
if (is_mt7630(dev)) {
dev->mt76.cap.has_5ghz = false;
dev_dbg(dev->mt76.dev, "mask out 5GHz support\n");
}
if (!mt76x02_field_valid(nic_conf1 & 0xff))
nic_conf1 &= 0xff00;
if (nic_conf1 & MT_EE_NIC_CONF_1_HW_RF_CTRL)
dev_err(dev->mt76.dev,
"driver does not support HW RF ctrl\n");
if (!mt76x02_field_valid(nic_conf0 >> 8))
return;
if (FIELD_GET(MT_EE_NIC_CONF_0_RX_PATH, nic_conf0) > 1 ||
FIELD_GET(MT_EE_NIC_CONF_0_TX_PATH, nic_conf0) > 1)
dev_err(dev->mt76.dev, "invalid tx-rx stream\n");
}
static void mt76x0_set_temp_offset(struct mt76x02_dev *dev)
{
u8 val;
val = mt76x02_eeprom_get(dev, MT_EE_2G_TARGET_POWER) >> 8;
if (mt76x02_field_valid(val))
dev->cal.rx.temp_offset = mt76x02_sign_extend(val, 8);
else
dev->cal.rx.temp_offset = -10;
}
static void mt76x0_set_freq_offset(struct mt76x02_dev *dev)
{
struct mt76x02_rx_freq_cal *caldata = &dev->cal.rx;
u8 val;
val = mt76x02_eeprom_get(dev, MT_EE_FREQ_OFFSET);
if (!mt76x02_field_valid(val))
val = 0;
caldata->freq_offset = val;
val = mt76x02_eeprom_get(dev, MT_EE_TSSI_BOUND4) >> 8;
if (!mt76x02_field_valid(val))
val = 0;
caldata->freq_offset -= mt76x02_sign_extend(val, 8);
}
void mt76x0_read_rx_gain(struct mt76x02_dev *dev)
{
struct ieee80211_channel *chan = dev->mphy.chandef.chan;
struct mt76x02_rx_freq_cal *caldata = &dev->cal.rx;
s8 val, lna_5g[3], lna_2g;
u16 rssi_offset;
int i;
mt76x02_get_rx_gain(dev, chan->band, &rssi_offset, &lna_2g, lna_5g);
caldata->lna_gain = mt76x02_get_lna_gain(dev, &lna_2g, lna_5g, chan);
for (i = 0; i < ARRAY_SIZE(caldata->rssi_offset); i++) {
val = rssi_offset >> (8 * i);
if (val < -10 || val > 10)
val = 0;
caldata->rssi_offset[i] = val;
}
}
static s8 mt76x0_get_delta(struct mt76x02_dev *dev)
{
struct cfg80211_chan_def *chandef = &dev->mphy.chandef;
u8 val;
if (chandef->width == NL80211_CHAN_WIDTH_80) {
val = mt76x02_eeprom_get(dev, MT_EE_5G_TARGET_POWER) >> 8;
} else if (chandef->width == NL80211_CHAN_WIDTH_40) {
u16 data;
data = mt76x02_eeprom_get(dev, MT_EE_TX_POWER_DELTA_BW40);
if (chandef->chan->band == NL80211_BAND_5GHZ)
val = data >> 8;
else
val = data;
} else {
return 0;
}
return mt76x02_rate_power_val(val);
}
void mt76x0_get_tx_power_per_rate(struct mt76x02_dev *dev,
struct ieee80211_channel *chan,
struct mt76_rate_power *t)
{
bool is_2ghz = chan->band == NL80211_BAND_2GHZ;
u16 val, addr;
s8 delta;
memset(t, 0, sizeof(*t));
/* cck 1M, 2M, 5.5M, 11M */
val = mt76x02_eeprom_get(dev, MT_EE_TX_POWER_BYRATE_BASE);
t->cck[0] = t->cck[1] = s6_to_s8(val);
t->cck[2] = t->cck[3] = s6_to_s8(val >> 8);
/* ofdm 6M, 9M, 12M, 18M */
addr = is_2ghz ? MT_EE_TX_POWER_BYRATE_BASE + 2 : 0x120;
val = mt76x02_eeprom_get(dev, addr);
t->ofdm[0] = t->ofdm[1] = s6_to_s8(val);
t->ofdm[2] = t->ofdm[3] = s6_to_s8(val >> 8);
/* ofdm 24M, 36M, 48M, 54M */
addr = is_2ghz ? MT_EE_TX_POWER_BYRATE_BASE + 4 : 0x122;
val = mt76x02_eeprom_get(dev, addr);
t->ofdm[4] = t->ofdm[5] = s6_to_s8(val);
t->ofdm[6] = t->ofdm[7] = s6_to_s8(val >> 8);
/* ht-vht mcs 1ss 0, 1, 2, 3 */
addr = is_2ghz ? MT_EE_TX_POWER_BYRATE_BASE + 6 : 0x124;
val = mt76x02_eeprom_get(dev, addr);
t->ht[0] = t->ht[1] = t->vht[0] = t->vht[1] = s6_to_s8(val);
t->ht[2] = t->ht[3] = t->vht[2] = t->vht[3] = s6_to_s8(val >> 8);
/* ht-vht mcs 1ss 4, 5, 6 */
addr = is_2ghz ? MT_EE_TX_POWER_BYRATE_BASE + 8 : 0x126;
val = mt76x02_eeprom_get(dev, addr);
t->ht[4] = t->ht[5] = t->vht[4] = t->vht[5] = s6_to_s8(val);
t->ht[6] = t->ht[7] = t->vht[6] = t->vht[7] = s6_to_s8(val >> 8);
/* ht-vht mcs 1ss 0, 1, 2, 3 stbc */
addr = is_2ghz ? MT_EE_TX_POWER_BYRATE_BASE + 14 : 0xec;
val = mt76x02_eeprom_get(dev, addr);
t->stbc[0] = t->stbc[1] = s6_to_s8(val);
t->stbc[2] = t->stbc[3] = s6_to_s8(val >> 8);
/* ht-vht mcs 1ss 4, 5, 6 stbc */
addr = is_2ghz ? MT_EE_TX_POWER_BYRATE_BASE + 16 : 0xee;
val = mt76x02_eeprom_get(dev, addr);
t->stbc[4] = t->stbc[5] = s6_to_s8(val);
t->stbc[6] = t->stbc[7] = s6_to_s8(val >> 8);
/* vht mcs 8, 9 5GHz */
val = mt76x02_eeprom_get(dev, 0x132);
t->vht[8] = s6_to_s8(val);
t->vht[9] = s6_to_s8(val >> 8);
delta = mt76x0_tssi_enabled(dev) ? 0 : mt76x0_get_delta(dev);
mt76x02_add_rate_power_offset(t, delta);
}
void mt76x0_get_power_info(struct mt76x02_dev *dev,
struct ieee80211_channel *chan, s8 *tp)
{
static const struct mt76x0_chan_map {
u8 chan;
u8 offset;
} chan_map[] = {
{ 2, 0 }, { 4, 2 }, { 6, 4 }, { 8, 6 },
{ 10, 8 }, { 12, 10 }, { 14, 12 }, { 38, 0 },
{ 44, 2 }, { 48, 4 }, { 54, 6 }, { 60, 8 },
{ 64, 10 }, { 102, 12 }, { 108, 14 }, { 112, 16 },
{ 118, 18 }, { 124, 20 }, { 128, 22 }, { 134, 24 },
{ 140, 26 }, { 151, 28 }, { 157, 30 }, { 161, 32 },
{ 167, 34 }, { 171, 36 }, { 175, 38 },
};
u8 offset, addr;
int i, idx = 0;
u16 data;
if (mt76x0_tssi_enabled(dev)) {
s8 target_power;
if (chan->band == NL80211_BAND_5GHZ)
data = mt76x02_eeprom_get(dev, MT_EE_5G_TARGET_POWER);
else
data = mt76x02_eeprom_get(dev, MT_EE_2G_TARGET_POWER);
target_power = (data & 0xff) - dev->mt76.rate_power.ofdm[7];
*tp = target_power + mt76x0_get_delta(dev);
return;
}
for (i = 0; i < ARRAY_SIZE(chan_map); i++) {
if (chan->hw_value <= chan_map[i].chan) {
idx = (chan->hw_value == chan_map[i].chan);
offset = chan_map[i].offset;
break;
}
}
if (i == ARRAY_SIZE(chan_map))
offset = chan_map[0].offset;
if (chan->band == NL80211_BAND_2GHZ) {
addr = MT_EE_TX_POWER_DELTA_BW80 + offset;
} else {
switch (chan->hw_value) {
case 42:
offset = 2;
break;
case 58:
offset = 8;
break;
case 106:
offset = 14;
break;
case 122:
offset = 20;
break;
case 155:
offset = 30;
break;
default:
break;
}
addr = MT_EE_TX_POWER_0_GRP4_TSSI_SLOPE + 2 + offset;
}
data = mt76x02_eeprom_get(dev, addr);
*tp = data >> (8 * idx);
if (*tp < 0 || *tp > 0x3f)
*tp = 5;
}
static int mt76x0_check_eeprom(struct mt76x02_dev *dev)
{
u16 val;
val = get_unaligned_le16(dev->mt76.eeprom.data);
if (!val)
val = get_unaligned_le16(dev->mt76.eeprom.data +
MT_EE_PCI_ID);
switch (val) {
case 0x7650:
case 0x7610:
return 0;
default:
dev_err(dev->mt76.dev, "EEPROM data check failed: %04x\n",
val);
return -EINVAL;
}
}
static int mt76x0_load_eeprom(struct mt76x02_dev *dev)
{
int found;
found = mt76_eeprom_init(&dev->mt76, MT76X0_EEPROM_SIZE);
if (found < 0)
return found;
if (found && !mt76x0_check_eeprom(dev))
return 0;
found = mt76x0_efuse_physical_size_check(dev);
if (found < 0)
return found;
return mt76x02_get_efuse_data(dev, 0, dev->mt76.eeprom.data,
MT76X0_EEPROM_SIZE, MT_EE_READ);
}
int mt76x0_eeprom_init(struct mt76x02_dev *dev)
{
u8 version, fae;
u16 data;
int err;
err = mt76x0_load_eeprom(dev);
if (err < 0)
return err;
data = mt76x02_eeprom_get(dev, MT_EE_VERSION);
version = data >> 8;
fae = data;
if (version > MT76X0U_EE_MAX_VER)
dev_warn(dev->mt76.dev,
"Warning: unsupported EEPROM version %02hhx\n",
version);
dev_info(dev->mt76.dev, "EEPROM ver:%02hhx fae:%02hhx\n",
version, fae);
mt76x02_mac_setaddr(dev, dev->mt76.eeprom.data + MT_EE_MAC_ADDR);
mt76_eeprom_override(&dev->mt76);
mt76x0_set_chip_cap(dev);
mt76x0_set_freq_offset(dev);
mt76x0_set_temp_offset(dev);
return 0;
}
MODULE_LICENSE("Dual BSD/GPL");